backweld

例句：

1. 1. The welding process is crucial for the structural integrity of the bridge.
   焊接过程对于桥梁的结构完整性至关重要。
2. 2.The old car was backwelded to fix the leaky gasket.
   旧车被重新焊接以修复漏气的垫圈。
3. 3. The engineers had to backweld the damaged parts to ensure they would not fail again.
   工程师们不得不重新焊接损坏的部分，以确保它们不会再次失败。